lcags rdo
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ལྕགས་རྡོ
shotput, flint stones, iron stone, iron ore [JV]
iron ore [RY]
(med) iron ore (Drungtso 1999, Phrin Las 1987), Limonite (Yeshi 2018). Synonyms : gru bzhi, brgya rdo, zhang blon bla rdo, sin dhu ra, rgya mtsho'i breg pa, mkha 'gro'i mnyal khrag (Yeshi 2018). The chief ores of iron consist mainly of the oxides: hematite (see mdung rtse smug po), goethite ( see mdung rtse dkar po) or limonite (see sin dhu ra); and the carbonate siderite. Siderite, FeCO3, can be yellowish- to greyish-brown, green, red and black. Fungi like Lichenothelia may oxidize iron to produce siderite, which is then a biomineral. Often found in bedded sedimentary deposits with a biological component, suggesting a biogenical origin. Numerous sites in Tibet. (mindat. org) Johannes Schmidt (talk) 17:24, 25 November 2021 (UTC)